Suppose the Correlation, R, Between Two Variables X and Y

question 14

Multiple Choice

Suppose the correlation, r, between two variables x and y is -0.44.What would you predict about a y value if the x value is 2 standard deviations above its mean?

• A)It will be .88 standard deviations below its mean.
• B)It will be .88 standard deviations above its mean.
• C)It will be 2 standard deviations below its mean.
• D)It will be .44 standard deviations below its mean.
• E)It will be .44 standard deviations above its mean.

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Definitions:

Capillary Refill

A test to assess peripheral circulation and dehydration by measuring how long it takes for color to return to an extremity's capillary bed after pressure is applied.

Chronic Obstructive Pulmonary Disease

A group of lung conditions that block airflow and make it difficult to breathe, including emphysema and chronic bronchitis.

Acute Exacerbation

A sudden worsening of the symptoms of a chronic condition, leading to an increased severity of disease state in a short period of time.

Near Vision

The ability to see objects clearly at a close distance, typically within arm's reach.